This paper reviews current technology and market trends in silicon inertial sensors using micromachining technologies. The requirements for successful commercialization of the research results will be discussed. Commercial implantation requires involvement at the design, process, and manufacturing stages, so that low cost, reliability, and better performance can be achieved. It is also necessary to have a clear understanding of the market and IC mentality. The paper also forecasts the potential applications and future market values of silicon-based inertial sensors.